Empidonax traillii extimus
D. Ahlers, Bureau of Reclamation. 2017. Survey forms for Southwest Willow Flycatcher and Yellow-billed Cuckoo for 2017.
Keller, D. 2016. Southwestern Willow Flycatcher permit report, TE-230274. Los Alamos National Laboratory.
Keller, D.C. 2013. Mexican Spotted Owl and Southwestern Willow Flycatcher surveys at Los Alamos National Laboratory. Submitted to U.S. Fish and Wildlife Service, TE800892-0.
Schwarz, H.R. 2013. Willow Flycatcher survey and detection form, Bluewater Creek. Cibola National Forest. 4p.
Chavez, A. and Ramsey, M. 2010. 2009 Southwest Willow Flycatcher Surveys at Bluewater Canyon, Lost Valley and San Ysidro, NM in the BLM Rio Puerco Field Office.
Hawks Aloft, Inc. 2007. Breeding bird surveys at seven riparian sites in the Bureau of Land Management, Albuquerque Resource Area.
Willians, J. (2005) Willow Flycatcher Survey and Detection Forms (revised April, 2004). Lincoln Supervisor's Office, Lincoln National Forest, USFS. 2 p.
Hawks Aloft, Inc. 2005. Willow Flycatcher surveys at Bluewater Canyon, Lost Valley, and San Ysidro, New Mexico. 41 p.
Durst, S. 2004. Southwestern willow flycatcher potential prey base and diet in native and exotic habitats. . 96 p.
Guaderrama, R. (2003) Southwestern Willow Flycatcher Inventory Report, Springer Springs, 2003. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 6 p.